JP2886548B2 - Speed limit alarm for automatic train stop - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a speed limit warning device in an automatic train stop device.

2. Description of the Related Art As shown in FIG. 8, a speed limit warning device in this type of automatic train stop device of the related art is not limited to a position considering a deceleration distance due to an emergency brake than a branching device 2 for speed limitation, Is set to a predetermined time (for example, 5 seconds) for a manual operation of a confirmation treatment to confirm that an alarm has been received because the speed is higher than the speed of the speed check point.
Second) plus the distance traveled.

The block diagram of the receiver 3 of this speed limit alarm device is as shown in FIG. 9, and the loop coil 6 is installed between the rails R, R so as to surround the ground member 5 for speed check. When the train TR approaches and the vehicle upper part is electromagnetically coupled, the oscillation frequency (for example, 105 KHz) from the receiver on the vehicle is supplied to the receiver 3, and the coupling transformer 7, the resistance attenuator 8, the bandpass filter
Main relay MR13 via 10, amplifying circuit 11, and rectifying circuit 12
Works.

Further, a part of the output from the rectifier circuit 12 is supplied to an inspection reference time generation circuit (timer circuit) 15, and the inspection reference time t at the speed set by the inspection speed switching terminal on the panel surface.
₀ (for example, 45 km / h) is generated, and the speed of the train TR is compared with the time until a point at which the vehicle starts to perform electromagnetic coupling between the vehicle upper child and the speed checking ground element 5 to perform the frequency change. That is, the train speed V is calculated from the time t required to pass through the certain check section l.
Is detected and compared with the check reference time t ₀ , (1). When the train TR passes over the ground child 5 in a short time t from the reference time t ₀ (t ₀ > t), that is, when the speed of the train TR exceeds the reference speed set value (45 km / h), Since the child control relay QR16 is not lifted, the vehicle child and the speed check ground element 5 are electromagnetically coupled, and the oscillation frequency of the vehicle receiver is changed to 130 KHz of the speed check ground element 5 frequency. Then, an alarm bell is sounded on the train TR, and when the manual operation of the confirmation treatment is not performed within the set time, the emergency brake is operated to limit the speed.

(2). If the train TR passes over the ground child 5 at a time t longer than the reference time t ₀ (t ₀ <t), that is, if the speed of the train TR is lower than the check speed set value (45 km / h), the time relay When the TMR 17 lifts after the reference time t ₀ , the ground control relay QR16 lifts and short-circuits the resonance circuit of the speed control ground 5 at a frequency of 130 KHz. Is not modulated even if it is electromagnetically coupled, and the train TR is passed without sounding the alarm bell.

Reference numeral 18 denotes a relay QCR for external control, which lifts when speed check is unnecessary and drops when necessary. 19 indicates a power supply.

Problems to be Solved by the Invention By the way, in the above speed limit alarm device, the manual operation of confirmation treatment after the alarm bell is sounded is performed at the deceleration distance due to the emergency brake of a reduced speed performance vehicle such as a freight train having poor braking performance. At the position obtained by adding the distance traveled to the set time, and at a position substantially before the branching device 2 that limits the speed,
In order to check the speed of the train TR, in the case of a high deceleration performance car with good braking performance, even if it is normal operation, it will pass at a high speed that always exceeds the check speed setting value and will be alerted, The alarm is not always in a dangerous state, and there is a problem that manual operations for checking and processing increase, which leads to a rut.

Therefore, the present invention solves the conventional problems as described above, and can be introduced also into a speed limit point such as a down slope other than a turnout, a curved section, and the like. For example, a reduced speed performance vehicle passes a speed check point at high speed. Immediately, the emergency brake is automatically applied,
When the speed of the train is reduced to below the speed limit and the high-speed reduction vehicle passes the speed check point at the speed of normal operation,
An object of the present invention is to provide a speed limit warning device in an automatic train stop device that can prevent a warning from being given.

Means for Solving the Problems In order to achieve the above object, the present invention provides a method for receiving a frequency emitted from a vehicle upper child by a train detection ground child 26 and a receiver 23 as shown in FIGS. The operation of the main relays HMR, LMR, the timer circuits 40, 41 that start operating by lifting the main relay HMR or the main relay LMR, and the lifting of the timer circuit 40 due to inactivity or operation of the timer circuit 41 The receiver 23 has a relay UTMR and a relay DTMR that lifts by the operation of the timer circuit 41, and lifts the relay UTMR from the time when the frequency emitted from the upper armature is received until the timer circuit 40 starts operating. Let me up
The frequency of the speed checking ground element 25 is set to the second frequency for operating the emergency brake on the vehicle, and then the timer circuit 40 is operated to drop the relay UTMR, and the frequency of the speed checking ground element 25 is set to The second frequency for operating the emergency brake is changed from the second frequency for operating the alarm bell on the vehicle to the first frequency for operating the alarm bell on the vehicle. Can be changed to a frequency that does not affect the on-board device.

In addition, in the above, the range of the alarm bell is widened on the speed check due to the train with poor braking performance, and in order to avoid the manual operation of the confirmation treatment over a wide range on the check speed, a high deceleration performance vehicle and a reduced speed performance vehicle are used. Is preferably determined by a speed limit warning device on the ground. For this reason, the train must be divided into high-speed deceleration performance vehicles and reduced-speed performance vehicles that have different oscillation frequencies of the upper armature, and the receiver of the speed limit warning device receives the frequency emitted from the upper armature by the grounding element for detection. The type of the train is determined by the following, and in the case of a high speed reduction vehicle, the reference speed for the warning speed of the alarm bell and the emergency brake of the high speed reduction vehicle is set in the timer circuits 41 and 40, and the speed check is performed. In the case of a performance vehicle, the speed reference is performed by setting the reference time for the warning speed of the alarm bell and the emergency brake of the reduced speed vehicle in the timer circuits 41 and 40.

In discriminating the type of the example car, in addition to a high deceleration performance vehicle having a superimposed frequency in addition to a frequency that is constantly oscillated by directing the train to the ground through the upper armature, a reduction that does not have the superimposed frequency only with the always oscillated frequency Divided into high-speed vehicles, the receiver of the speed limit warning device receives the superimposed frequency transmitted toward the ground through the vehicle upper child with the detection ground child, and determines the type of train from the presence or absence of that frequency. It may be.

Embodiment FIGS. 1 to 3 show an embodiment of the present invention. FIG. 2 is a block diagram of a receiver 23 of the speed limit alarm device, in which a train detecting ground wire 26 corresponding to the conventional loop coil 6 is arranged with a speed checking ground wire 25 and a certain checking interval l. Have been.

When the train TR approaches the detection grounding element 26 and the vehicle upper part is electromagnetically coupled, the frequency from the on-vehicle receiver (94 KHz when the train is a high speed reduction vehicle, In this case, 105 KHz) is supplied, and the bandpass filter 31 that filters only the 94 KHz frequency of the high deceleration performance car or the frequency 10 of the reduced speed performance car is supplied.
It passes through a bandpass filter 32 that filters only 5 KHz.

Reference numerals 33 and 34 denote amplification circuits and rectification circuits for the bandpass filter 31, and when a frequency of 94 KHz passes through them, the main relay HMR35 operates. Three
6, 37 are amplification and rectification circuits for the bandpass filter 32,
When 105 KHz passes here, the main relay LMR38 operates.

40 and 41 are timer circuits as a check time generation circuit,
Operation starts (non-operation) by launching the main relay HMR35 or main relay LMR38. The timer circuit 40 operates during the time when the vehicle passes the inspection section 1 at a speed that is equal to or less than the emergency brake over value range among the values that exceed the inspection speed set value (for example, 45 km / h). The operation is performed during the time when the vehicle passes through the inspection section 1 at a speed equal to or less than the over value range of the alarm bell.

The relay TUR43 is lifted when the timer circuit 40 times out (operates), and the relay TDR44 is used for the timer circuit 41.
When the time is up (moving), the boat will lift. 46 is relay RS
R and 47 indicate a relay UTMR, 48 indicates a relay DTMR, and 50 indicates a relay QCR.

On the other hand, relays UTMR47, DTMR48
When the relay UTMR47 is lifted, the frequency of the speed check ground element 25 is changed from 130 KHz to 123 KHz through the capacitor 51, and when the relay DTMR48 is lifted, the capacitor 52 is lifted.
The frequency of the ground probe 25 for speed check through 123KHz to 103K
Hz.

In this embodiment, the relay QCR50 when the speed check is unnecessary
In the operating condition of
47 and the relay DTMR48 are in a lifting state, and the grounding element 25 for speed check has a resonance frequency of 103 KHz. for that reason,
The on-board equipment will pass without any warning.

However, when the speed check is required, the relay QCR50 falls, and the ground checker 25 for speed check is 130 KHz depending on the time until the timer circuits 40 and 41 operate when the train passes.
Can be changed to a resonance frequency of 123 KHz or 103 KHz. Then, in relation to the time when the train TR passes through the check section l,
When the vehicle upper arm is electromagnetically coupled with the speed check ground arm, the emergency brake is activated at 123 KHz and the alarm bell sounds at 130 KHz, but the detailed operation is as shown in the time chart of FIG. is there.

That is, as shown in FIG. 3, after the relay QCR50 falls, when the high deceleration vehicle (SE-H vehicle) passes through the detection grounding element 26 at a speed within the range of the emergency brake over value, the frequency of the high deceleration vehicle The relay HMR35 is lifted up through the bandpass filter 31 that filters only 94 KHz, and this lifted state is self-maintained. Timer circuit 40, with lifting contact of relay HMR35,
41 starts operation (non-operation) and relay UTMR47
Is lifted. As a result, the frequency of the ground probe 25
Train passing from 130KHz to 123KHz resonance frequency
The emergency brake is applied to the TR.

Then, when the timer circuit 40 times out (operates), the relay TUR43 lifts, the relay UTMR47 falls, and the speed checking ground element 25 has a frequency of 123KHz to 130K.
It changes to the resonance frequency of Hz, and the state is such that the alarm bell sounds for the passing train TR.

Next, when the timer circuit 41 times out (operates), the relay DTMR48 and the relay UTMR47 are lifted by the lift of the relay TDR44, and the frequency of the
Train passing from 130KHz to 103KHz resonance frequency
No alarm is given to TR.

After that, recovery started by lifting the relay TUR43,
When a predetermined time (5 seconds) elapses, the slow release relay RSR46
Falls, the self-holding circuit of the relay HMR is cut off and the relay HMR35 falls, thereby causing the relay TUR43, TDR44, U
TMR47 and DTMR48 fall, respectively, and a ground probe 25 for speed check
Changes the resonance frequency from 103 KHz to 130 KHz and returns to the initial state.

When the vehicle with high deceleration performance passes through the detection grounding element 26 at a speed outside the range of the alarm bell, the timer circuit 40 operates and the timer circuit 41 is inactive while the speed verification grounding element is inactive.
The warning bell on the car sounds as the car child passes over 25.

When the vehicle with low deceleration performance passes through the grounding element 26 for detection, the relay LMR38 is lifted up through the bandpass filter 32 that filters only the frequency of 105 KHz of the vehicle with low speed reduction, and this lifting state is self-maintained, and The same operation as described above is performed.
At this time, since the set time of the timer circuits 40 and 41 is set longer than the set time of the high speed reduction performance vehicle, the set time is switched depending on the type of the vehicle and the checking speed is changed.

4 to 7 show another embodiment. In the above-described embodiment, the high deceleration performance vehicle oscillates a frequency of 94 KHz and the reduced speed performance vehicle oscillates a frequency of 105 KHz (always oscillating frequency) through the upper armature, and the different frequency is received by the detection ground arm 26 to determine the type of the train. In this embodiment, both the high deceleration performance vehicle and the reduced speed performance vehicle have a constant oscillation frequency of 105K.
Hz is oscillated through the vehicle body, and high-speed deceleration performance vehicles transmit the superimposed frequency 74.5 KHz through the same vehicle body. The type of train is determined by receiving the presence / absence of the superimposed frequency by the detection grounding element 26.

Therefore, as shown in FIG. 4, the bandpass filter 31 'filters only the superimposed frequency 74.5 KHz of the high deceleration performance vehicle, and the bandpass filter 32 operates as the constant oscillation frequency of the high deceleration performance vehicle or the reduced speed performance vehicle.
It is designed to filter only 105KHz. Further, on the conductors connected to the timer circuits 40 and 41, the falling point of the relay HMR is provided in series with the lifting point contact of the relay LMR. In the receiver 23, the configuration of the other parts is the same as that of the above-described embodiment, and the same parts are denoted by the same reference numerals and description thereof will be omitted.

FIG. 6 shows an example of a block connection diagram of a receiver 62 on a vehicle (vehicle with high deceleration performance) provided with a vehicle body 61 for transmitting the above-mentioned constant oscillation frequency 105 KHz and superimposed frequency 74.5 KHz. 62 is an electronic circuit 63 and various relays MR, ECR, ECBR, MPR, UR, AC
Consists of R. As shown in detail in FIG. 7, the electronic circuit 63 has a main amplifier circuit 65 connected to the vehicle upper body 61. The main amplifier circuit 65 includes a band-pass filter 66 for a constant oscillation frequency of 105 KHz,
An amplifier circuit 67 and a rectifier circuit 68 are connected in series with the relay MR, and a bandpass filter 7 for a frequency of 123 kHz is provided.
0, an amplification circuit 71, and a rectification circuit 72 are provided in series with the relay ECR. Reference numeral 73 denotes an oscillator for a superimposed frequency of 74.5 KHz, which is connected to the main amplifier circuit 65 via an amplifier circuit 74. It should be noted that such an oscillator 73 and an amplifier circuit 74 are not provided in the receiver of the reduced speed vehicle.
In FIG. 6, 75 is an alarm consisting of an alarm bell, 76 is a display consisting of red and white lights, 77 is a confirmation push button, 78 is a return switch, 79 is an automatic brake, and these are connected via a connection box (not shown). It is connected to the receiver 62 by a conducting wire, and is operated by a command from the receiver 62.

The operation content of this embodiment is as shown in the time chart of FIG. 5, and as is clear from the comparison with the time chart of FIG. 3, either the high deceleration performance vehicle (SE-H vehicle) or the reduced speed performance vehicle is performed. In this case, the relay LMR 38 is lifted up through the band-pass filter 32 that constantly filters only the oscillation frequency of 105 KHz, and the lifting state is self-maintained.

Effect of the Invention The present invention has the above-described configuration, and when a train passes through the speed check ground at a high speed exceeding the check speed set value, immediately applies an emergency brake automatically and limits the train speed. Since the speed can be reduced to the speed or less, the degree of security can be significantly improved as compared with the related art, and the position where the speed can be checked can be made closer to a place where the speed is limited such as a branch. In addition, this can be achieved by a timer circuit provided in the receiver on the ground and various relay circuits connected in association with these timer circuits, and the configuration is simplified. In addition, there is an excellent effect that it is possible to greatly reduce the number of manual operations for warning and confirmation at the speed check location.

In the case of claim 2 or 3, by discriminating between a high deceleration performance vehicle and a low speed performance vehicle, it is possible to avoid a warning and a manual operation of the confirmation handling over a wide range in the inspection speed, and to take a detailed measure. There is an excellent effect that can be.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention, FIG. 2 is a block diagram of a speed limit alarm device of the above, FIG. 3 is a time chart for explaining the operation of the above, and FIG. FIG. 5 is a block diagram of a speed limit alarm device showing an embodiment, FIG. 5 is a time chart for explaining the operation of the embodiment, FIG. 6 is a block diagram of a receiver on a car, and FIG. FIG. 8 is a schematic diagram showing a conventional example, and FIG. 9 is a block diagram of the speed limit alarm device. 2 ... Turn-over, 25 ... Ground element for speed check, 26 ... Ground element for train detection, 40,41 ... Timer circuit

Claims (3)

(57) [Claims] 1. A manual operation for confirming that a warning has been received because the speed of the train is greater than or equal to the speed check point at the speed deceleration distance by the emergency brake from the speed limit location on the track. A speed limit warning device that issues a speed limit warning is installed at a position to which a distance traveled within a preset time is added, and the speed limit warning device includes a train detection ground element arranged at a predetermined interval. In a speed limit warning device of an automatic train stop device equipped with a ground checker for speed check and a receiver for connecting the both grounders, a train detection grounder (26) and a receiver (23) emit a signal from a vehicle upper body. Main relay that operates by receiving a set frequency
HMR, LMR, a timer circuit (40, 41) that starts operating by lifting of the main relay HMR or the main relay LMR, and lifting of the timer circuit (40) due to inactivity or operation of the timer circuit (41). The receiver (23) is provided with the relay UTMR to be activated and the relay DTMR to be lifted by the operation of the timer circuit (41), and from when the frequency emitted from the vehicle arm is received until the timer circuit (40) operates. Then, the relay UTMR is lifted up, the frequency of the ground contact for speed check (25) is set to the second frequency for operating the emergency brake on the vehicle, and the timer UTMR is operated to drop the relay UTMR. hand,
The frequency of the speed check ground element (25) is changed from the second frequency for operating the emergency brake on the vehicle to the first frequency for operating the alarm bell on the vehicle, and the relay DTMR and the relay are operated by the operation of the timer circuit (41). The automatic train stopping device is characterized in that each of the UTMRs is lifted so that the frequency of the ground contact element (25) for speed checking can be changed to a frequency having no effect on the on-board device. Speed limit alarm. 2. The speed limit warning device for an automatic train stop device according to claim 1, wherein said train comprises a high speed reduction performance vehicle and a reduced speed performance vehicle, each of which has a different oscillation frequency of an upper armature, and The receiver (23) determines the type of train by receiving the frequency emitted from the upper child by the ground detector (26), and in the case of a high speed reduction vehicle, the alarm bell of the high speed reduction vehicle In the timer circuit (40, 41), the speed reference is set by setting the check reference time for the check speed of the emergency brake and the emergency brake, and in the case of a reduced speed performance vehicle, the check speed of the warning bell and emergency brake speed of the reduced speed performance vehicle is checked. Timer circuit (4
A speed limit warning device for an automatic train stop device, wherein the speed check is performed by setting to 0,41). 3. The speed limit warning device for an automatic train stop device according to claim 1, wherein a high deceleration performance vehicle having a superimposed frequency in addition to a frequency at which the train is constantly oscillated toward the ground through a vehicle upper arm; It consists of a reduced-speed performance vehicle having only a constant oscillation frequency and no superimposed frequency, and a receiver (23) of the speed limit alarm device is
The superimposed frequency transmitted to the ground through the vehicle arm is received by the ground sensor for detection (26) to determine the type of train from the presence or absence of that frequency. The reference speed for the warning speed of the alarm bell and the emergency brake is set in the timer circuit (40, 41) to check the speed. In the case of a reduced speed performance vehicle, the speed of the warning bell and the emergency brake of the reduced speed performance vehicle is checked. A speed limit warning device in an automatic train stop device, wherein a speed reference is set by setting a reference time for checking to a timer circuit (40, 41).